Fix critical editor dialog layout

src/RolemasterDb.App/wwwroot/app.css

@@ -630,15 +630,25 @@ textarea {
 
 .critical-editor-dialog {
     width: min(1100px, 100%);
-    max-height: 100%;
+    max-height: calc(100vh - 2.5rem);
     display: flex;
     flex-direction: column;
+    min-height: 0;
+    overflow: hidden;
     border-radius: 24px;
     background: rgba(255, 250, 242, 0.98);
     border: 1px solid rgba(127, 96, 55, 0.18);
     box-shadow: 0 28px 60px rgba(41, 22, 11, 0.24);
 }
 
+.critical-editor-form {
+    display: flex;
+    flex: 1 1 auto;
+    min-height: 0;
+    flex-direction: column;
+    overflow: hidden;
+}
+
 .critical-editor-header,
 .critical-editor-footer {
     display: flex;
@@ -664,6 +674,8 @@ textarea {
 }
 
 .critical-editor-body {
+    flex: 1 1 auto;
+    min-height: 0;
     overflow: auto;
     padding: 1rem 1.25rem 1.25rem;
     display: grid;